Impeoved prepaeatios feom geahamite galled vbooseste



I lt-iit'l] .tttitfi intent @ffire HENRY WURTZ,

or NEW YORK, N. Y..

Letters Patent No. 73,862, dated January 28, 1868.

m IMPROVED PREPARATION FROM GRAHAMITE GALLED YISUOSINE.

. M an fitlgvbltlt nfemt it'll! than ittttttt gamut nut matting tart at tlge filllltt.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, HENRY WURTZ, of New York, have invented a new and improved Article of Manut'act of Ritchie county, West Virginia, called by me Graham and exact description thereof, reference being had to tl in the" county oi New York, in the State of New York, are or Chemical Preparation, obtained from the mineral ite; and I do hereby declare that the folloirin-g is a full 1e accompanying samples of the preparation, Description. i

The nature of my invention consists in operating upon pulverized Grahamite with certain liquid media or mcnstrua, which I have found to exert thereon a specific and partial solvent action, ancl to extract tl valuable, new, and peculiar resinous or resinoicl product. which, when isolated by evaporation of the solvent, presents the aspect of a massof great hrillianoy or lustre, extremely adhesive and ductile when warm, and

usually of a Faint and peculiar aromatic or balsamic odor, recalling that of liquorice-root, to which I have given the name of Alpha Grahamite Resinoid, or Visoosine.

The solvents which may be used for separating'tlie alpha resin from Grnhamite are many in number, including most liquids of the classes of ethers and naphthas; the most available in practice, however, being common sulphuric other, and the more volatile products of the distillation of petroleum, (known in commerce under the names of henzine, petroleummaphtha, gasoline, 8L0.) The alpha resinoid of Grahahaite haslieen found and varnishes, and for other purposes to l) filing.

ieref'rom a n kinds of cements in preparation for peeially well adapted for making certai e described in specifications of other patents now C- Zai-m. What 1 claim as my invention, and desire to secure by Letters Patent, is- The new chemical preparation or article of manufacture, specified and described above, called by me alpha resinold of Grahanlite, or viscosine, and obtained by the action of solvents upon the'mineral Grahamite, substantially set forth.

In testimony July, 1867.-

HENRY WURTZ. Witnesses:

JOHN F. CLARK,

O. A. Scans.

whcreofl'I havehcreunto attached my signature, in Washington, this thirty-first day of 

